Sirup-pump



(No Model.) 2 Sheets-Sheet 1. W. J.'AUSTIN. SIRUP PUMP.

Patented Apr. 16, 1895.

WEI- E s s a s.

WILBUR. J. AUSTIN, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO THE AMERI- NrrEnSTAfI-Es FFI CAN SODA FOUNTAIN COMPANY, OF TRENTON, NEW JERSEY.

SIRUP-PUMP.

SPECIFICATION forming part of Letters Patent No. 537,519, dated April 16, 1895. Application filed December 15, 1894. Serial No. 531,867. (No model.)

To aZZ whom it may concern:

Be it known that I, WILBUR J. AUSTIN, a citizen of the United, States, residing at Malden, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in sirup-Pumps;

and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in sirup pumps employed in connection with the dispensing of carbonated beverages, or the filling of bottles with thesame. This class of apparatus has heretofore been used especially for drafting and measuring a designated quantity of sirup which is to be subsequently commingled with and thoroughly mixed in some carbonated liquid.

The gist of my invention is embodied primarily in the plunger of the pump. This plunger is a hollow body which reciprocates within a cylinder and is adapted to serve as a part of the conduit through which the carbonated liquid flows in order to be delivered through the dispensing faucet, or into the bottle to be filled.

The primary object of my invention is to make the plunger perform the duty of a faucet in addition to its usualduties. To this end I locate a valve in the end of the plunger and provide that the said valve shall open by the advance of the plunger and allow the carbonated liquid to flow-through the plunger after the sirup has been expelled from the cylinder; secondly, to prevent the general dis tribution of the sirup within the pump cylinder as heretofore, and moreover to thoroughly rinse out and cleanse the cylinder from the residue or sirup after each discharge of the same by the flow through said cylinder of the carbonated liquid.

Other advantages and the mode of operating will be hereinafter more fully explained.

The drawings herewith presented represent in Figure 1 a side elevation, and Fig. 2 an end elevation, of a sirup pump embodying my invention. Fig. 3 is a vertical central longitudinal section of the same. Fig. 4 is a top view. Fig. 5 is a sectional elevation in part on line 1 1 in Fig. 1. Fig. 6 is a transverse section enlarged on line 2 2 in Fig. 3. Fig. 7 is a sectional plan in part on line 3 3 in Fig. 3.

In said drawings 2 represents a main casting or head formed with suitable delivery and supply ducts and to which are attached the various co-operating parts, which compose the pump as an entirety. Pendant from the head and secured thereto by screw-thread attachment is disposed a cylinder 3 supplied with a packing gland 4, which serves to create a fluid-tight connection about the pump plunger 5. This element in lieu of being solid is hollow. Thus a chamber 6 is created adapted to receive carbonated beverages. These liquids enter by way of the duct 7 formed in the lower end of said plunger connecting with the source from which the carbonated liquids are derived, while a valve at the opposite end of said plunger is arranged to be opened at designated times, for a longer or shorter period, and thus deliver the carbonated liquid to the dispensing faucet, or bottle in process of being filled. The lower end of the plunger is formed with a projecting neck 8 to which is attached a rocking yoke 9. In order to equalize the pull in operating the plunger twin connecting rods 10. 10'. are loosely secured at one end to the yoke, while their opposite extremities are made fast to a lever or handle 12 pivotally mounted on a v shaped boss 13 formed on the head. Hence in moving the lever should the strain be unequal or should one of the rods 10 be longer or shorter than the other the rocking of the yoke will obviate the check valve 15. This is aspringactuated I00 one and is seated in the head as shown in Fig. 3, entrance thereto being had by means of a screw plug 16.

In the general arrangement of pumps of this class the sirup is delivered by suction within the cylinder, and the designated quantity posiitively determined by controlling the movement of the oscillating lever. In the present instance the sirup supply pipe is shown at 17, the delivery end terminating in the head 2 which is so cored at 18 as to interconnect the upper end of the cylinder therewith. See Figs. 3 and 5. This pipe is furnished with a check valve 19, see Fig. 5, to compel the sirup to pass out through the valve 15 when the plunger is advanced.

In Figs. 1 and 3 are shown a semi-circular or segmental plate 20 which may be graduated to indicate fluid ounces and to which is attached an adjustable stop 21 projecting laterally therefrom and is adapted to engage with the operating lever or handle and limit its movement more or less. In this way the amount of sirup which enters the cylinder is gaged, and an equal quantity is delivered successively into the vessels in process of being filled. After the sirup has been gaged and forced into the bottle the latter is to be filled wit-h carbonated liquid under pressure, and in the manner by which such liquid is conveyed through the plunger and delivered in the desired amounts, according to the position of the lever which controls the movement of the plunger, is embodied the chief feature of my invention. To carry out this result I have, as before premised, located a valve 23 in the upper end of the plunger. Said valve may be a checlevalvc of any ordinary construction and so disposed that the pressure from the fountain or other generating source of supply for the carbonated fluids shall hold it in a closed position. Said valve is spring-actuated, see Fig. 3, and is moreover arranged so that the valve-stem 24 shall extend some distance beyond the upper end of the plunger in which it is located. Moreover, [have equipped the check-valve 15 with a pendent adjustable stud or boss 25 so positioned that it co-operates with the valve stem 24 on the plunger valve. Hence after the sirup has entered the cylinder and during the advance of the plunger to expel the said sirup through the valve 15 this latter is held from its seat and is positively positioned against the lower end of the tubular portion of the plug 16. Thus after the sirup is almost completely expelled the valve stem of the plunger valve has been carried forward by the plunger until it contacts against the stud 25, when the said valve 23 is lifted from its seat and the carbonated water under pressure has a free passage to the delivery faucet or to the bottle in process of being filled.

The operation of the above described assemblage of parts arranged to form a pump embodying my invention is as follows :-The pump preferably placed in an upright position is coupled by the discharge pipe 14 with the bottling table to deliver into the bottles to be filled; by the sirup pipe 17 with the sirup tank, and by the neck 8 of the plunger with the fountain or generating source for the carbonated liquids by a flexible connection, as a rubber pipe, not shown. The valves 15, 19 and 23 are all closed, while the operating lever 12 is thrown down, the top of the plunger being at the upper end of the cylinder, but the two valves 19, 23 are notin contact. The lever is now swung up until stopped by the gage 21, whereby the plunger is withdrawn from the cylinder in part, creating suction. The valve 19 is thus opened and sirup fills the space between the head of the plunger and the upper end of the cylinder. The various parts have now assumed the relative positions as shown in Figs. 1 or 3. The lever is now swung down which act causes the plunger to advance within the cylinder. This serves to open the escape valve 15 which allows the sirup to pass into the bottle. The pressure created in forcing out the sirup holds the valve 15 open and presses it firmly against the lower end of the plug 16. Hence as the lever approaches the extreme of lowest oscillation, the valve 23 is carried against a positive stop in the shape of the stud 25. In this way the valve is forced from its seat against the pressure of the liquid in the chamber of the plunger which is the same with that of the generating fountain and consequently the carbonated liquid is free to discharge through the valves 23, 15 and pipe 14 into the bottle. The operator may thus control the position of the plunger by means of the lever 12 and consequently the valve 23. In this way he can readily permit the desired quantity of carbonated liquid to enter the vessel large or small. The bottle being filled the lever is again thrown down, such movement being accompanied by an inflow of sirup to the cylinder. The subsequent movements, as before described, are repeated and in this way successive bottles are readily and rapidly filled, or sweetened carbonated beverages dispensed as may be desired.

One of the great advantages attendant upon the construction of this pump consists in the fact that the sirup enters the cylinder and is discharged through the same passage and valve as the carbonated liquid. I-Ience, since a flow of liquid follows each discharge of sirup the internal portions of the pump exposed to the sirup are cleansed and Washed off, thus obviating the collection of sticky end with a fluid source of supply, a valve located at the opposite front end of said plunger, and positive means to open said valve a head or casting at one end having fluid sup-.

ply and discharge ducts, of a chambered plunger valve-supplied at one end and interconnected at its opposite extremity with a liquid supply, said valve to prevent discharge of liquid through the plunger when in motion, and means to produce positive opening of said valve as the plunger completes its active reciprocation to allow escape of fluid through the plunger so long as the plunger is at rest, substantially as set forth.

3. In a sirup pump the combination with a cylinder, a cylinder valve-supplied at one end, a chambered plunger, and a fluid supply which connects directly with said plunger, of a valve located in the front end of said plunger, and means for producing travel of the plunger in one direction whereby the plunger valve is positively thrust against the cylinder valve to open said plunger valve for the continuous passage of liquid through the plunger, substantially as specified.

4. The combination with a head having fluid supply and discharge ducts, an oscillating lever thereupon, and a cylinder attached to said head, of a hollow plunger longitudinally bored for the reception of fluids which pass directly from said plunger to the discharge pipe, a valve located at one end of said plunger, a rocking yoke secured to the outer end of the cylinder, and twin connecting rods which unite the yoke with the lever, substantially as described.

5. In a sirup pump a stationary head, a cylinder attached thereto, a sirup duct which connects with the cylinder, a valve for passage of siru p into the cylinder a discharge pipe, and check-valves in said duct and pipe, combined with a chambered plunger, communicating with the cylinder only at one end a lever to cause reciprocations of the plunger, and a valve located in one end of the plunger and adapted to open said valve adapted to contact with the cylinder valve and hold both valves open, while the plunger is at rest, substantially as stated.

6. In a sirup pump, a stationary head, a delivery pipe therein, a cylinder fast to said head, and a check valve to permit escape of fluid from said cylinder, combined with a plunger longitudinally bored for the passage of fluids, and communicating with the cylinder only at one end and a check-valve projecting in advance of the end of the plunger and adapted to meet a fixed point to permit a continuous flow of liquid through said plunger at stated times, substantially as explained.

H. E. LODGE, GEO. F. W001). 

